Research Article

Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State

Table 1

Results corresponding to maximal lactate steady-state intensity (MLSS), lactate minimum identified by visual inspection (LMv) and at the peak intensity. Intensity; [bLac] blood lactate concentration; VO2: oxygen uptake; VCO2: carbon dioxide output; VE: minute ventilation; HR: heart rate; RPE: rate of perceived exertion.

Intensity[bLac]VO2VCO2VEHRRPE
(%)(mM)(L·min−1)(L·min−1)(L·min−1)(bpm)

MLSS 1 3 . 6 ± 2 . 1 5 . 1 ± 1 . 8 2 . 8 ± 0 . 4 2 . 8 ± 0 . 5 8 5 . 8 ± 1 2 . 1 1 7 0 ± 8 1 6 ± 2
LMv 1 2 . 6 ± 1 . 7 4 . 7 ± 1 . 7 2 . 8 ± 0 . 4 2 . 4 ± 0 . 6 * 7 5 . 7 ± 1 5 . 8 * 1 6 7 ± 1 2 1 5 ± 2
Peak 1 9 . 5 ± 2 . 4 # 3 . 3 ± 0 . 5 # 3 . 5 ± 0 . 5 # 1 2 6 . 2 ± 2 2 . 2 # 1 8 7 ± 8 # 2 0 ± 0 #

* 𝑃 < 0 . 0 5 in relation to MLSS.
# 𝑃 < 0 . 0 1 in relation to MLSS and LMv.